Abstract: A framework is provided where a stochastic fully data-driven model (FDDM) predicts states of the ocean for both short and long-time scales with uncertainty quantification. The FDDM, which can generate a large number of ensembles at low computational cost, is integrated with a multi-layer perceptron-based data assimilation algorithm, which can efficiently and accurately assimilate Lagrangian ocean observations.
Type:
Application
Filed:
June 7, 2023
Publication date:
December 12, 2024
Applicant:
Xerox Corporation
Inventors:
Ashesh Kumar Chattopadhyay, Kalaivani Ramea Kubendran, Eric David Cocker
Abstract: An antimicrobial composition is disclosed. The antimicrobial coating composition includes at least one cured phase change ink which may include one or more crosslinked polymers, a photoinitiator, a wax, a gellant, and an antimicrobial additive. The composition also includes an engineered surface topography formed by the cured phase change ink. A method of preparing a textured antimicrobial surface is also disclosed. The method may include designing a template having a texture, printing the template onto a substrate using an uncured antimicrobial ink, and providing a light source to crosslink the uncured antimicrobial ink.
Abstract: A multi-function device (MFD) is disclosed. For example, the MFD includes a communication interface to establish a communication path with a remote server, a user interface to receive a request to create an electronic file based on a scan of a document, a processor, and a non-transitory computer-readable medium storing a plurality of instructions. The instructions when executed by the processor cause the processor to scan the document to create the electronic file of the document, generate an encryption code associated with the electronic file of the document that is scanned, and transmit the electronic file to the remote server.
Type:
Grant
Filed:
December 22, 2023
Date of Patent:
December 10, 2024
Assignee:
Xerox Corporation
Inventors:
Sanja Pstrocki-Porras, Dianne Colelli, Mirelsa Fontanes-Perez, Cheryl A. Nazzaro
Abstract: Various methods are disclosed. For example, a method includes receiving, by a processor of a multi-function device at a location of an enterprise, a print job request from a mobile endpoint device, transmitting, by the processor, an authentication request to a print server, receiving, by the processor, an authentication confirmation from the print server that a user of the mobile endpoint device is associated with an enterprise where the MFD is located, and executing, by the processor, the print job.
Abstract: Compositions include a plurality of polymer particulates comprising a matrix polymer and one or more types of nanoparticles selected from the group consisting of biopolymer nanoparticles, biomineral nanoparticles excluding biomineralized silica alone, and any combination thereof. Illustrative examples of such nanoparticles may include cellulose nanoparticles, hydroxyapatite nanoparticles, or any combination thereof associated with the matrix polymer. The polymer particulates may be prepared by melt emulsification. Methods include depositing such polymer particulates in a powder bed; and heating a portion of the powder bed to consolidate a portion of the polymer particulates into a consolidated part having a specified shape. The matrix polymer may be biodegradable and lose at least about 40% mass in six days in a phosphate buffer solution (0.2 M, pH 7.0) containing 0.2 mg/mL of lipase obtained from Pseudomonas cepacia (?30 U/mg) and incubated at 37° C.
Type:
Application
Filed:
August 9, 2024
Publication date:
December 5, 2024
Applicant:
Xerox Corporation
Inventors:
Alexandros Vasileiou, Valerie M. Farrugia
Abstract: A method of inkjet printer operation indicates a need for a remedial printhead operation by predicting a number of inoperative inkjets and locations for the inoperative inkjets in at least one printhead in the inkjet printer at a predetermined time. The prediction is made using Markov chain Monte Carlo models that correspond to different ranges of area coverage density for inkjet areas of a printhead.
Abstract: A nonlimiting example method of forming highly spherical carbon nanomaterial-graft-polyurethane (CNM-g-polyurethane) particles may comprising: mixing a mixture comprising: (a) carbon nanomaterial-graft-polyurethane (CNM-g-polyurethane), wherein the CNM-g-polyurethane particles comprises: a polyurethane grafted to a carbon nanomaterial, (b) a carrier fluid that is immiscible with the polyurethane of the CNM-g-polyurethane, optionally (c) a thermoplastic polymer not grafted to a CNM, and optionally (d) an emulsion stabilizer at a temperature greater than a melting point or softening temperature of the polyurethane of the CNM-g-polyurethane and the thermoplastic polymer, when included, and at a shear rate sufficiently high to disperse the CNM-g-polyurethane in the carrier fluid; cooling the mixture to below the melting point or softening temperature to form CNM-g-polyurethane particles; and separating the CNM-g-polyurethane particles from the carrier fluid.
Type:
Grant
Filed:
May 17, 2021
Date of Patent:
December 3, 2024
Assignee:
Xerox Corporation
Inventors:
Robert Claridge, Valerie M. Farrugia, Shivanthi Easwari Sriskandha
Abstract: A method of making thermoplastic polymer particles may include mixing in an extruder a mixture comprising a thermoplastic polymer and a carrier fluid that is immiscible with the thermoplastic polymer at a temperature greater than a melting point or softening temperature of the thermoplastic polymer and at a shear rate sufficiently high to disperse the thermoplastic polymer in the carrier fluid; cooling the mixture to below the melting point or softening temperature of the thermoplastic polymer to form solidified particles comprising thermoplastic polymer particles having a circularity of 0.90 or greater and that comprise the thermoplastic polymer; and separating the solidified particles from the carrier fluid.
Type:
Grant
Filed:
June 30, 2020
Date of Patent:
December 3, 2024
Assignee:
Xerox Corporation
Inventors:
Valerie M. Farrugia, Michael S. Hawkins, David John William Lawton, Carolyn Patricia Moorlag
Abstract: An apparatus and method are provided for extracting a build part from an additive manufacturing machine. Upon completion of the build part by the additive manufacturing machine, a pin array is placed above the build part, the pin array including a plurality of pins slidably supported by a support plate for vertical movement relative to the support plate. The pin array is moved toward the build part so that the plurality of pins contact the build part and conform to the contour of the build part. The pins of the pin array are locked with the pins in contact with and conforming to the build part. The pin array and build part are inverted so that the build part is supported by the locked pins of the pin array. All of the pins of the array are locked simultaneously by a common locking component. The build plate can be formed on a sacrificial interposer plate that is removed by an etchant bath supported on the pin array when the build part is inverted.
Type:
Grant
Filed:
January 27, 2022
Date of Patent:
December 3, 2024
Assignee:
Xerox Corporation
Inventors:
David K. Biegelsen, David Mathew Johnson
Abstract: An inkjet printer prints on a first side of a media sheet less than all of the color separations in an image, generates a first set of image data of the printed color separations to identify image features, returns the partially printed media sheet to a position that precedes the print zone in the printer, generates a second set of image data of the partially printed media sheet before it reenters the print zone to identify the image features, compares the positions of the image features in the first set of image data to the positions of the image features in the second set of image data to register one or more color separations remaining to be printed with the color separations printed on the first side of the media sheet, and prints the remaining registered color separations on the first side of the partially printed media sheet.
Type:
Grant
Filed:
February 1, 2023
Date of Patent:
December 3, 2024
Assignee:
Xerox Corporation
Inventors:
Douglas K. Herrmann, Seemit Praharaj, Jason M. LeFevre, Jorge A. Alvarez, Chu-Heng Liu
Abstract: A method and system for rendering a watermark with near perfect infrared colors can involve providing an infrared pattern ink having a color with a lower spectral reflectance in an infrared spectrum, replacing the color having the lower spectral reflectance with a replacement color constituting a combination of colors having a higher spectral reflectance in the infrared spectrum, them matching in a visible spectrum, the replacement color with the color having the lower spectral reflectance in the infrared spectrum, and rendering a watermark as a metameric color pair including the infrared pattern ink and replacement color. Alternatively, a watermark may be created by defining a first color pattern having a CMYK value derived from a particular LAB value with a lower toner stack and a higher reflectance in an infrared spectrum as compared to a second color pattern having a second CMYK value derived from the same LAB value.
Abstract: Disclosed is a system and method for cooling paper within a printer assembly that includes at least one misting assembly designed to mist an aqueous solution onto an unprinted surface of paper stock after a first side is printed. At least one convection accelerator assembly is designed to accelerate evaporation of the aqueous solution before the printed paper stock arrives at the at least one printing station for printing on the unprinted surface. At least one or more of a paper temperature, machine temperature, printhead temperature, and humidity sensor are operationally coupled to at least one controller assembly programmed to control at least one or more of misting, humidity, and airflow. The at least one controller assembly is designed to determine the heat to be dissipated into the airflow from the printed paper stock to obtain a targeted paper temperature and, therefore, the amount and placement of aqueous solution misted.
Type:
Grant
Filed:
August 1, 2022
Date of Patent:
November 26, 2024
Assignee:
XEROX CORPORATION
Inventors:
Seemit Praharaj, Jason Lefevre, Douglas K. Herrmann, Jorge A. Alvarez, Chu-Heng Liu, Yumeng Wu
Abstract: A method of producing hydrogen may include: providing a catalyst-carbon gel; and flowing a hydrocarbon through a catalyst, wherein catalyst is a metal or mixture of metals that is non-wetting to solid carbon at 1 bar absolute and 10° C. above a melting point of the metal or mixture of metals.
Type:
Grant
Filed:
June 28, 2022
Date of Patent:
November 26, 2024
Assignee:
Xerox Corporation
Inventors:
Bradley Rupp, Mary Louie, Jin Ki Hong, Dane Boysen
Abstract: The present disclosure discloses methods and systems for detecting one or more security patterns in a document submitted at a multi-function device. According to the disclosure the document is received at the multi-function device, wherein the document includes at least textual content. Thereafter, a pre-defined operation is performed to detect edges of the at least textual content. Once detected, one or more text edges are filtered based on one or more templates. Further, based on the one or more templates, shape and color of the filtered one or more text edges are analyzed, and accordingly, the presence of the one or more security patterns is ascertained in the submitted document at the multi-function device.
Abstract: Methods and systems for rendering a print job can involve saving an initial characteristic of a print job during a setup of the print job, comparing a current characteristic of the print job to the initial characteristic, and applying a transformation to compensate for a mismatch between the initial characteristic and the current characteristic prior to rendering of the print job. The print job is rendered after applying the transformation. The transformation may be performed in a vector space prior to marking of the print job in a device space.
Abstract: A laser perforation system, including a drive roller, a tensioner roller spaced apart from the drive roller, a thin film belt arranged around both the drive roller and tensioner roller, the thin film belt including a front surface facing radially outward and a rear surface facing radially inward, a backstop arranged radially within the thin film belt, and a laser head arranged proximate the front surface, the laser head operatively arranged to direct a laser at the thin film belt to create holes therein.
Type:
Grant
Filed:
July 22, 2021
Date of Patent:
November 5, 2024
Assignee:
XEROX CORPORATION
Inventors:
Robert Jian Zhang, George Leonidas Vassilaros, Michael Stephen Roetker, Scott Joseph Griffin